As the club cranked up the club-versus-country conflict, Liverpool could be followed by other Premier League clubs in refusing to release their players for next month's World Cup qualifiers due to coronavirus quarantine requirements.
The Merseyside club has informed the Egyptian and Brazilian football associations that Mohamed Salah (Egypt), Roberto Firmino, Alisson, and Fabinho (all Brazil) will not be allowed to travel to any nations on the UK's blacklist.
However, they are unlikely to be the only club to do so, as the Premier League and other World Leagues Forum members said earlier this month that those refusing to release players for international service would have their "full support."
Traveling to a red-list country during the window would result in Premier League players missing vital domestic matches, as well as a ten-day stay in a hotel quarantine. However, failing to show up for crucial World Cup qualifiers could result in a Fifa fine because of a fixture backlog caused by the Covid-19 situation.
Previously, the governing body avoided a club-versus-country spat by postponing matches and enabling clubs to refuse to release players for internationals if it meant quarantining them.
Because of the postponements, both next month's and October's South American qualifiers have been altered from double-headers to triple-headers, fearing that it would be impossible to fit all of the games in before the World Cup.
Clubs and leagues have reacted angrily to what they have called a "unilateral" decision that might deprive them of players even if quarantine restrictions are not in place.